Deep Magic Volume 2 (p.186)
Harmful Exchange
3-level Conjuration
Casting Time: 1 reaction, which you take when a creature you can see within 30 feet of you makes an attack against you
Range/Area: 30ft.
Components: Verbal, Somatic
Duration: Instant
Attack/Save: CHA Save
Damage/Effect: Teleportation
As a creature attacks you, you swap places with another creature you can see within range, forcing that creature to take a blow intended for you. If the target of the swap is unwilling, it must succeed on a Charisma saving throw to avoid the effect.
When you swap places with a creature, you are teleported to the that creature’s space as it is teleported to yours, and that creature becomes the new target of the triggering attack. You can’t swap places with a creature more than one size category larger than you.
At higher levels: When you cast this spell using a spell slot of 4th level or higher, the spell’s range increases by 10 feet for each slot level above 3rd.
Available for: Bard, Sorcerer, Wizard